Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free,
general-purpose compressed audio format for audio and music at fixed
and variable bitrates from 16 to 128 kbps/channel.
The Vorbisfile library provides a convenient high-level API for decoding
and basic manipulation of all Vorbis I audio streams.

Available versions

The list below is just for information; Zero Install will automatically select one of
these versions for you.